CN217274385U

CN217274385U - Fume exhaust fan

Info

Publication number: CN217274385U
Application number: CN202220771352.7U
Authority: CN
Inventors: 唐兴旺; 袁柯铭
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2022-03-31
Filing date: 2022-03-31
Publication date: 2022-08-23
Anticipated expiration: 2032-03-31

Abstract

The utility model discloses a range hood, which comprises a box body and a fan frame arranged above the box body, wherein a fan system is arranged in the fan frame, the lower end part of the box body is in an open shape, the inner side of the box body is communicated with the fluid of the fan system, an air inlet component is arranged on the box body, the air inlet component comprises a first air inlet plate positioned on the left side and a second air inlet plate positioned on the right side, the first air inlet plate is in a hollow 1/n cylindrical shape, the second air inlet plate is in a hollow 1/m cylindrical shape, and n and m are both greater than 1; the central shaft of each air inlet plate extends along the left-right direction, the peripheral wall of each air inlet plate is kept to be abutted against the rear side of the lower end part of the box body, and the space between one end of each air inlet plate which is kept in the box body in the circumferential direction and the front side of the box body forms an air outlet corresponding to each air inlet plate; each air inlet plate is rotatably connected with the box body and can penetrate through the lower end part of the box body to rotate relative to the box body, and therefore the size of the corresponding air outlet can be changed through the rotation of each air inlet plate.

Description

Cooking fume exhauster

Technical Field

The utility model relates to an oil smoke purifier, especially a range hood.

Background

The range hood is used as an essential kitchen appliance for each family, the range hood has the effects that oil smoke is sucked from the air inlet through the impeller rotating at a high speed in the volute, the oil smoke is filtered by the impeller, the filtered oil smoke is discharged from the air outlet, the purification work of kitchen air is completed, the reasonable air inlet is favorable for improving the oil smoke suction effect, the escape of the oil smoke is reduced, and the air quality of the kitchen is improved.

Chinese utility model patent No. 202122402075.0 discloses a range hood, including casing and the fan frame of setting in the casing top, be provided with the fan system in the fan frame, be formed with the air intake between casing and the fan frame, be formed with on the casing by the inside sunken smoke inlet chamber of front side surface, the air intake, smoke inlet chamber and fan system fluid intercommunication, the casing is including being located the air inlet board that is used for oil smoke direction fan system that enters the smoke inlet chamber, the air inlet board is extended towards the inboard top slope of casing by the lower part department of air intake, range hood is still including the cleaning device who is used for clean air inlet board.

The burner of a common household cooker is usually divided into a left burner and a right burner, a user sometimes only uses the burner on one side and sometimes uses both sides simultaneously in the cooking process, but the household cooker can often only fry on one side of the burner which can generate a large amount of oil smoke. If the user only uses the left furnace end to cook or uses the left side to cook and steam rice in the actual cooking process, the left oil smoke concentration and the oil smoke particle trend of the range hood are necessarily much larger than those of the right side, so that the oil smoke escape frequently occurs in the quick-frying cooking process. Obviously the promotion of impeller rotational speed will lead to the noise to increase by a wide margin, influences people healthy, and the stir-fry of actually cooking takes place in one side, and both sides promote the energy consumption waste that the amount of wind leads to one side in addition simultaneously.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to the not enough of above-mentioned prior art existence, provide a range hood, can strengthen the oil absorption cigarette effect of unilateral through the flow distribution of the left and right sides.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: the utility model provides a range hood, includes box and the fan frame of setting in the box top, be provided with fan system in the fan frame, the lower tip of box is uncovered form, the inboard and the fan system fluid intercommunication of box, be provided with air inlet subassembly, its characterized in that on the box:

the air inlet assembly comprises a first air inlet plate positioned on the left side and a second air inlet plate positioned on the right side, the first air inlet plate is in a hollow 1/n cylindrical shape, the second air inlet plate is in a hollow 1/m cylindrical shape, and n and m are both larger than 1;

the central shaft of each air inlet plate extends along the left-right direction, the peripheral wall of each air inlet plate is kept to be abutted against the rear side of the lower end part of the box body, and the space between one end of each air inlet plate which is kept in the box body in the circumferential direction and the front side of the box body forms an air outlet corresponding to each air inlet plate;

each air inlet plate is rotatably connected with the box body and can penetrate through the lower end part of the box body to rotate relative to the box body, and therefore the size of the corresponding air outlet can be changed through the rotation of each air inlet plate.

Preferably, in order to facilitate the connection between each air inlet plate and the box body and control the rotation of the air inlet plates, the thickness of the opening at the lower end part of the box body in the front-back direction is matched with the radius of each air inlet plate, and the central shaft of each air inlet plate is positioned on the front side of the lower end part of the box body.

More preferably, n and m are both 4.

In order to facilitate the rotary connection between each air inlet plate and the box body, the air inlet assembly further comprises a first rotating shaft which rotatably connects the first air inlet plate with the bottom of the box body and a second rotating shaft which rotatably connects the second air inlet plate with the bottom of the box body, wherein the first rotating shaft is used as a central shaft of the first air inlet plate, and the second rotating shaft is used as a central shaft of the second air inlet plate;

the first air inlet plate is provided with a first end and a second end in the circumferential direction, a first air inlet is formed in a space between the first end and the first rotating shaft, and a first air outlet is formed in a space between the second end and the front side of the box body;

the second air inlet plate is provided with a third end and a fourth end in the circumferential direction, a second air inlet is formed in a space between the third end and the second rotating shaft, and a second air outlet is formed in a space between the fourth end and the front side of the box body;

the second end and the fourth end are the ends which are circumferentially kept in the box body by the corresponding air inlet plate.

In order to drive the first air inlet plate and the second air inlet plate to rotate, the range hood further comprises a driving device for driving the first air inlet plate and the second air inlet plate to rotate, the driving device comprises a first motor for driving the first air inlet plate to rotate and a second motor for driving the second air inlet plate to rotate, an output shaft of the first motor is in transmission connection with a first rotating shaft of the first air inlet plate, and an output shaft of the second motor is in transmission connection with a second rotating shaft of the second air inlet plate.

Compared with the prior art, the utility model has the advantages of: the flow control of the corresponding air outlet is realized through the rotary arrangement of the first air inlet plate and the second air inlet plate on the box body, so that the flow on the left side and the flow on the right side can be distributed without increasing the total air volume, and the problem that the oil fume suction effect can be greatly improved on the same side of the corresponding range hood when one side is fried and cooked is solved; each air inlet plate can be in the state of closing corresponding air outlet completely to can block the runner in the box, thereby realize preventing down the cigarette and scurry the flavor, or the inside peculiar smell diffusion of lampblack absorber to the kitchen environment in.

Drawings

Fig. 1 is a schematic view of the open state of two sides of the range hood according to the embodiment of the present invention;

fig. 2 is a schematic view of a left side open state of the range hood according to the embodiment of the present invention;

fig. 3 is a side view of the range hood according to the embodiment of the present invention in an open state;

fig. 4 is a partial sectional view of a range hood according to an embodiment of the present invention;

fig. 5 is a side view, partially in cross section, of the range hood according to the embodiment of the present invention in an open state;

fig. 6 is a side view, partially in cross section, of a half-open state of a range hood according to an embodiment of the present invention;

fig. 7 is a partial cross-sectional side view of the closed state of the range hood according to the embodiment of the present invention;

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

In the description of the present invention, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in a generic and descriptive sense only and not for purposes of limitation, as the disclosed embodiments of the invention may be oriented in different directions and the directional terms are intended to be illustrative and should not be construed as limiting, such as "upper" and "lower" are not necessarily limited to directions opposite to or coincident with the direction of gravity. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

Referring to fig. 1 to 4, a range hood includes a box body 1 and a fan frame 2 disposed above the box body 1, a fan system 3 is disposed in the fan frame 2, and the inner side of the box body 1 is in fluid communication with the fan system 3. The lower end part of the box body 1 is open.

The bottom of the box body 1 is provided with an air inlet assembly, and the air inlet assembly comprises a first air inlet plate 41 positioned on the left side and a second air inlet plate 42 positioned on the right side. The first air inlet plates 41 are all in a hollow 1/n cylindrical shape, the second air inlet plates 42 are in a hollow 1/m cylindrical shape, n and m are both larger than 1, and 1/n (1/m) refers to the proportion of the whole cylindrical shape after being divided in the circumferential direction, so that the cylindrical shape is provided with notches in the circumferential direction. n and m may be equal or unequal, and in this embodiment, preferably, n and m are both 4, so that the longitudinal sections of the first air inlet plate 41 and the second air inlet plate 42 are both 1/4 circular arcs. The radii of the two cylinders may be equal or unequal, in this embodiment, preferably, the radii are equal, and the thickness of the box body 1 in the front-rear direction is adapted to the radii of the air inlet plates, where adapted means equal or nearly equal. The central axis of each air inlet plate extends along the left-right direction and is positioned at the front side of the lower end part of the box body 1, the peripheral wall of each air inlet plate is kept to be abutted against the rear side of the lower end part of the box body 1, and oil smoke is prevented from entering between each air inlet plate and the rear side of the lower end part of the box body 1.

The first air inlet plate 41 and the second air inlet plate 42 are rotatably arranged at the bottom of the box body 1 and can rotate through the lower end opening of the box body 1. The air intake assembly further includes a first rotating shaft 413 rotatably connecting the first air intake plate 41 to the bottom of the case 1, and a second rotating shaft 423 rotatably connecting the second air intake plate 42 to the bottom of the case 1. The first rotating shaft 413 serves as a central shaft of the first air inlet plate 41, and the second rotating shaft 423 serves as a central shaft of the second air inlet plate 42. The first rotating shaft 413 and the first air inlet plate 41 are fixed, and the second rotating shaft 423 and the second air inlet plate 42 are fixed so as to be synchronously rotatable, respectively. The first rotating shaft 413 is rotatably connected to the case 1, and the second rotating shaft 423 is rotatably connected to the case 1.

The first air inlet plate 41 has a first end 414 and a second end 415 in a circumferential direction, wherein a space between the first end 414 and the first rotary shaft 413 forms a first air inlet 411, a space between the second end 415 and the front side of the cabinet 1 forms a first air outlet 412, and the second air inlet plate 42 has a third end 424 and a fourth end 425 in the circumferential direction, wherein a space between the third end 424 and the second rotary shaft 413 forms a second air inlet 421, and a space between the fourth end 425 and the front side of the cabinet 1 forms a second air outlet 422, respectively. Each intake vent is located upstream of a respective vent, and second end 415 of first air intake panel 41 and fourth end 425 of second air intake panel 42 are retained within cabinet 1.

The range hood further comprises a driving device for driving the first air inlet plate 41 and the second air inlet plate 42 to rotate. The driving device comprises a first motor 51 for driving the first air inlet plate 41 to rotate and a second motor 52 for driving the second air inlet plate 42 to rotate. The first motor 51 is arranged at the left side of the box body 1, and an output shaft of the first motor 51 is in transmission connection with the first rotating shaft 413 of the first air inlet plate 41. The second motor 52 is arranged at the right side of the box body 1, and an output shaft of the second motor 52 is in transmission connection with the second rotating shaft 423 of the second air inlet plate 42.

Referring to fig. 1 to 7, when the first air inlet plate 41 and the second air inlet plate 42 are in the open state, both the first air inlet 411 and the second air inlet 421 can move to the lower side of the box body 1 and face the front side, at this time, both the second end 415 of the first air inlet plate 41 and the fourth end 425 of the second air inlet plate 42 are located at the rear side of the lower end portion of the box body 1, and both the first air outlet 412 and the second air outlet 422 face the upper side, and are in the maximum state. When the first air inlet plate 41 and the second air inlet plate 42 are in a closed state, both the first air inlet 411 and the second air inlet 421 can move to the inner side of the bottom of the box body 1 and face downward, and the second ends of the first air inlet plate 41 and the second air inlet 42 respectively abut against the inner wall of the front side of the box body 1, so as to close the corresponding air outlets. By controlling the rotation angles of the first air inlet plate 41 and the second air inlet plate 42, the flow rate of the corresponding air outlet can be controlled, and the purpose of flow rate distribution is achieved.

Referring to fig. 1 and 5, when two burners of two cookers cook simultaneously, the first air inlet plate 41 and the second air inlet plate 42 are fully opened (i.e., the first air inlet plate 41 and the second air inlet plate 42 fully extend out of the bottom of the cabinet 1), and the suction force of the first air inlet 411 and the suction force of the second air inlet 421 are the same.

If the left side of the cooking range is stir-fried to cook and the right side is steamed, the oil smoke amount on the left side is larger than that on the right side for the range hood, and the second air inlet plate 42 is properly closed through the switch button, referring to fig. 6, according to the fluid continuity principle, Q is V × S, wherein Q is the air volume, V is the flow velocity, and S is the sectional area. Total air quantity of Q _{General assembly} Invariable, S _{Right side} Decrease, then Q _{Right side} Decrease, and Q _{General (1)} ＝Q _{Left side of} +Q _{Right side} I.e. Q _{Left side of} The air volume of the first air inlet 411 increases, and the smoking effect on the left side is enhanced. The reverse is true when stir-frying is carried out on the right side.

Referring to fig. 7, the first air inlet plate 41 and the second air inlet plate 42 can be completely closed, and the space of the box body 1 above the first air inlet plate 41 and the second air inlet plate 42 is isolated from the space below the first air inlet plate 41 and the second air inlet plate 42, so that a flow passage in the box body 1 is blocked, and therefore, the odor escaping from the smoke or the odor in the range hood can be prevented from being diffused to the kitchen environment.

In this embodiment, the maximum rotation angle of each air inlet plate is 90 °, and the angle changes with the change of n.

The term "fluid communication" as used herein refers to a spatial relationship between two components or portions (hereinafter collectively referred to as a first portion and a second portion), i.e., a fluid (gas, liquid or a mixture of both) can flow along a flow path from the first portion or/and be transported to the second portion, and may be directly communicated between the first portion and the second portion, or indirectly communicated between the first portion and the second portion via at least one third member, which may be a fluid passage such as a pipe, a channel, a duct, a flow guide, a hole, a groove, or a chamber allowing the fluid to flow therethrough, or a combination thereof.

Claims

1. The utility model provides a range hood, includes box (1) and sets up fan frame (2) in box (1) top, be provided with fan system (3) in fan frame (2), the inboard and fan system (3) fluid intercommunication of box (1), the lower tip of box (1) is spacious mouthful of form, be provided with air inlet subassembly, its characterized in that on box (1):

the air inlet assembly comprises a first air inlet plate (41) positioned on the left side and a second air inlet plate (42) positioned on the right side, the first air inlet plate (41) is in a hollow 1/n cylindrical shape, the second air inlet plate (42) is in a hollow 1/m cylindrical shape, and both n and m are greater than 1;

the central shaft of each air inlet plate extends along the left-right direction, the peripheral wall of each air inlet plate is kept to be abutted against the rear side of the lower end part of the box body (1), and the space between one end of each air inlet plate which is kept in the box body (1) in the peripheral direction and the front side of the box body (1) forms an air outlet corresponding to each air inlet plate;

each air inlet plate is rotatably connected with the box body (1) and can penetrate through the lower end part of the box body (1) to rotate relative to the box body (1), so that the rotation of each air inlet plate can change the size of the corresponding air outlet.

2. The range hood of claim 1, wherein: the thickness of the opening at the lower end part of the box body (1) in the front-back direction is matched with the radius of each air inlet plate, and the central shaft of each air inlet plate is positioned on the front side of the lower end part of the box body (1).

3. The range hood of claim 2, wherein: n and m are both 4.

4. The range hood of claim 1, wherein: the air inlet assembly further comprises a first rotating shaft (413) and a second rotating shaft (423), the first rotating shaft (413) is used for rotatably connecting the first air inlet plate (41) with the bottom of the box body (1), the second air inlet plate (42) is used for rotatably connecting the second air inlet plate (42) with the bottom of the box body (1), the first rotating shaft (413) is used as a central shaft of the first air inlet plate (41), and the second rotating shaft (423) is used as a central shaft of the second air inlet plate (42);

the first air inlet plate (41) is provided with a first end (414) and a second end (415) in the circumferential direction, a first air inlet (411) is formed in a space between the first end (414) and the first rotating shaft (413), and a first air outlet (412) is formed in a space between the second end (415) and the front side of the box body (1);

the second air inlet plate (42) is provided with a third end (424) and a fourth end (425) in the circumferential direction, the space between the third end (424) and the second rotating shaft (423) is respectively provided with a second air inlet (421), and the space between the fourth end (425) and the front side of the box body (1) forms a second air outlet (422);

the second end (415) and the fourth end (425) are the ends of the corresponding air inlet plates which are circumferentially kept in the box body (1).

5. The range hood of claim 4, wherein: the range hood is still including being used for driving first air inlet plate (41) and second air inlet plate (42) pivoted drive arrangement, drive arrangement is including being used for driving first air inlet plate (41) pivoted first motor (51) and being used for driving second air inlet plate (42) pivoted second motor (52), the output shaft of first motor (51) is connected with first pivot (413) transmission of first air inlet plate (41), the output shaft of second motor (52) is connected with second pivot (423) transmission of second air inlet plate (42).